It uses the 22 Magnum cartridge. MRF stands for "magnum rim fire". It uses the 22 Magnum cartridge. MRF stands for "magnum rim fire".
There is a .22 WRF, and a .22 WMR. WRF is Winchester Rimfire. Bigger than a ,22 Long Rifle, but shorter than a .22 WMR- Winchester Magnum Rimfire. If someone is using the term .22 MRF, it is an inaccurate term.
22 Magnum Rim Fire
SS 22 MRF Revolver
No guessing involved. Call S&W and they will tell you when it left the factory. The Model 51 was made from 1960-1974.
Contact S&W customer service through their website
100-450 USD
22 s and 43 w are coordinates. The coordinates reference Rio de Janeiro.
50-400 usd
S&W has made dozens of different models
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